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Vergleich der muttergebundenen und der künstlichen Aufzucht in Bezug auf Gesundheit, Gewichtsentwicklung und chronischen Stress bei Milchviehkälbern

Roth, B. A.; Barth, K. and Hillmann, E. (2009) Vergleich der muttergebundenen und der künstlichen Aufzucht in Bezug auf Gesundheit, Gewichtsentwicklung und chronischen Stress bei Milchviehkälbern. Paper at: 10. Wissenschaftstagung Ökologischer Landbau, Zürich, 11.-13. Februar 2009.

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Summary

In artificial rearing, calves are separated from their dam usually within 24h after birth
and any further social contacts to the mother are prevented. Although this is common
in practice we expect severe consequences on the health state, weight gain and
stress response of the young calf. Two groups of calves suckled by their mother (unrestricted
contact, n=14; contact twice daily for 15 minutes each before milking, n=15)
were compared to two control groups that were both fed via automatic milk feeder
(maximal six times daily, n=14; twice daily, n=14). The calves of the four treatment
groups were kept in the same barn and cows were milked twice daily. All calves were
weaned at 13 weeks of age. The calves were weighed weekly until 3 weeks after
weaning. The health state of each animal was assessed daily and all veterinary treatments
were recorded until weaning. Stress response to a long-term stressor (absence
of the mother) was assessed by stimulation of the HPA axis by ACTH administration
(at 11 weeks of age). For statistical analyses, linear mixed-effects models were used.
The health state of both suckled groups was poorer (p=0.046, caused by diarrhoea),
but the number of animals that had to be treated by a veterinarian did not differ. During
the milk feeding period, weight gain was better in suckled calves (p<0.001). After
weaning, the weight gain of all treatment groups was diminished, especially in suckled
calves (p<0.001). Cortisol response to ACTH administration was reduced in calves fed
via an automatic milk feeder (p<0.001). The higher weight gain in suckled calves
before weaning can be explained by the large milk amounts the calves received.
These results suggest that suckled calves show fewer signs of chronic stress. We
conclude that rearing without contact with the mother causes chronic stress in young
calves in terms of desensitization of the HPA axis.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:Kälber, Gewichtszunahmen, Gesundheit, Stress
Subjects: Animal husbandry > Production systems > Dairy cattle
Animal husbandry > Health and welfare
Research affiliation: International Conferences > 2009: Scientific Conference on Organic Agriculture > Tier > Tierhaltung
Related Links:http://www.wissenschaftstagung.de/, http://www.verlag-koester.de/buch.php?id=645&start=0&fb_id=37
Deposited By: Roth, Beatrice A
ID Code:14066
Deposited On:16 Apr 2009
Last Modified:12 Apr 2010 07:37
Document Language:German - Deutsch
Status:Published
Refereed:Peer-reviewed and accepted
Additional Publishing Information:Dieser Beitrag ist im Tagungsband der 10. Wissenschaftagung erschienen:
Mayer, J.; Alföldi, T.; Leiber, F.; Dubois, D.; Fried, P.; Heckendorn, F.; Hillmann, E.; Klocke, P.; Lüscher, A.; Riedel, S.; Stolze, M.; Strasser, F.; van der Heijden, M. and Willer, H., (Hrsg.) (2009) Werte – Wege – Wirkungen: Biolandbau im Spannungsfeld zwischen Ernährungssicherung, Markt und Klimawandel. Beiträge zur 10. Wissenschaftstagung Ökologischer Landbau, Zürich, 11.-13. Februar 2009.
Band 1: Boden, Pflanzenbau, Agrartechnik, Umwelt- und Naturschutz, Biolandbau international, Wissensmanagement
Band 2: Tierhaltung, Agrarpolitik und Betriebswirtschaft, Märkte und Lebensmittel.
Verlag Dr. Köster, Berlin.
Der Tagungsband kann beim Verlag Dr. Köster bezogen werden; siehe http://www.verlag-koester.de/buch.php?id=645&start=0&fb_id=37

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